The missing step in the sequence you've provided, which connects farming in Central America and the Caribbean to negative impacts on the ocean through pesticide pollution, would likely be A.
The sequence seems to build upon the idea that farming practices contribute to ocean pollution through the use of pesticides. Here's how it would look:
- A: Factories that make pesticides dump their waste products into the ocean, polluting it.
- B: Rain washes pesticides off crops and into rivers, which eventually flow into the ocean.
- C: Most farms are located along the coast where flooding can wash pesticides into the ocean.
- D: Earthquakes in mudslides push crops into rivers where the pesticides wash away and reach the ocean.
In this context, A acts as the initial cause of pesticide pollution that can then lead to runoff from the farms and other related processes described in steps B, C, and D which further connect farming practices to ocean pollution.